Process for adsorbing sulfur species from propylene/propane using regenerable adsorbent
CA 2085582 C · Owner: Exxon Chemical Patents, Inc. · Inventors: Norris, Donald James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of removing sulfur components from a hydrocarbon stream which involves contacting a hydrocarbon stream including an initial amount of at least one sulfur species selected from the group consisting of mercaptans, organic sulfides and, disulfides with a catalyst capable of adsorbing the sulfur species in the absence of extraneously added hydrogen and under conditions suitable for removing the at least one sulfur species from the hydrocarbon stream by the catalyst to form a resultant hydrocarbon stream containing a reduced amount of the at least one sulfur species.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed June 11, 1991 and granted May 18, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.